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27 lines
616 B
C++
27 lines
616 B
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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class Mapper229 : public BaseMapper
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{
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protected:
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virtual uint16_t GetPRGPageSize() override { return 0x4000; }
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virtual uint16_t GetCHRPageSize() override { return 0x2000; }
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void InitMapper() override
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{
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WriteRegister(0x8000, 0);
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}
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void WriteRegister(uint16_t addr, uint8_t value) override
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{
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SelectCHRPage(0, addr & 0xFF);
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if(!(addr & 0x1E)) {
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SelectPrgPage2x(0, 0);
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} else {
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SelectPRGPage(0, addr & 0x1F);
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SelectPRGPage(1, addr & 0x1F);
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}
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SetMirroringType(addr & 0x20 ? MirroringType::Horizontal : MirroringType::Vertical);
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}
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}; |